ASTROSAT CZTI

Data Quality Report

Orbit 26487

Creation date: 2024-06-27T19:29:37.765431
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A07_146T01_9000003828_26487cztM0_level2.evt modeM0/AS1A07_146T01_9000003828_26487cztM0_level2_quad_clean.evt
Size (bytes)241,433,28013,060,800
Size230.2 MB 12.5 MB
Events in quadrant A1,423,54754,607
Events in quadrant B1,431,95855,450
Events in quadrant C1,504,84551,410
Events in quadrant D2,777,53050,956

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A058200
B058630
C061210
D0100680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A254060.236220%
B254180.314837%
C2541331.298701%
D254139515.545061%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 2540 2540 0 0 0.00% 0.00%
B 2541 2541 0 0 0.00% 0.00%
C 2541 2541 5 5 0.20% 0.20%
D 2541 2541 329 329 12.95% 12.95%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 13 254 3978 48.83 369 363 74.0
A 0 226 3272 39.29 369 363 74.0
A 3 137 3033 36.07 369 363 74.0
B 0 190 13309 190.19 361 354 68.1
B 12 111 7548 105.61 361 354 68.1
B 11 111 6901 96.11 361 354 68.1
C 4 254 95923 1190.54 344 347 80.3
C 14 238 56808 703.3 344 347 80.3
C 3 233 9814 117.93 344 347 80.3
D 1 52 882934 10755.75 338 331 82.1
D 7 80 528018 6430.6 338 331 82.1
D 12 233 53958 653.52 338 331 82.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter